import router, {constantRoutes} from '@/router'
import Layout from '@/Layout/index.vue'
import * as icons from '@ant-design/icons-vue';

import ParentView from '@/components/ParentView/index.vue'

// 匹配views里面所有的.vue文件
const modules = import.meta.glob('./../../views/**/*.vue')

const usePermissionStore = defineStore(
  'permission',
  {
    state: () => ({
      routes: [],
      defaultRoutes: [],
      topbarRouters: [],
      sidebarRouters: []
    }),
    actions: {
      setRoutes(routes) {
        this.routes = constantRoutes.concat(routes);
      },
      setDefaultRoutes(routes) {
        this.defaultRoutes = routes;
      },
      setTopbarRoutes(routes) {
        this.topbarRouters = routes
      },
      setSidebarRouters(routes) {
        this.sidebarRouters = routes
      },
      generateRoutes() {
        // 向后端请求路由数据
        return getRouters().then(res => {
          const sdata = JSON.parse(JSON.stringify(res.data));
          const rdata = JSON.parse(JSON.stringify(res.data));
          const sidebarRoutes = filterMenus([...constantRoutes, ...sdata], true);
          const topbarRouters = filterMenus([...constantRoutes, ...sdata]);
          const rewriteRoutes = filterAsyncRouter(rdata, false, true);
          rewriteRoutes.push({path: '/:pathMatch(.*)*', redirect: '/404', hidden: true});
          this.setRoutes(rewriteRoutes);
          this.setSidebarRouters(sidebarRoutes);
          this.setDefaultRoutes(sidebarRoutes);
          this.setTopbarRoutes(topbarRouters);
          return rewriteRoutes;
        })
      }
    }
  })

// 遍历后台传来的路由字符串，转换为组件对象
function filterAsyncRouter(asyncRouterMap, lastRouter = false, type = false) {
  return asyncRouterMap.filter(route => {
    if (type && route.children) {
      route.children = filterChildren(route.children)
    }
    if (route.component) {
      // Layout ParentView 组件特殊处理
      if (route.component === 'Layout') {
        route.component = Layout
      } else if (route.component === 'ParentView') {
        route.component = ParentView
      } else {
        route.component = loadView(route.component)
      }
    }
    if (route.children != null && route.children && route.children.length) {
      route.children = filterAsyncRouter(route.children, route, type)
    } else {
      delete route['children']
      delete route['redirect']
    }
    return true
  })
}

function filterChildren(childrenMap, lastRouter: any = false) {
  var children = []
  childrenMap.forEach((el, index) => {
    if (el.children && el.children.length) {
      if (el.component === 'ParentView' && !lastRouter) {
        el.children.forEach(c => {
          c.path = el.path + '/' + c.path
          if (c.children && c.children.length) {
            children = children.concat(filterChildren(c.children, c))
            return
          }
          children.push(c)
        })
        return
      }
    }
    if (lastRouter) {
      el.path = lastRouter.path + '/' + el.path
    }
    children = children.concat(el)
  })
  return children
}

export const loadView = (view) => {
  let res;
  for (const path in modules) {
    const dir = path.split('views/')[1].split('.vue')[0];
    if (dir === view) {
      res = () => modules[path]();
      break;
    }
  }
  return res;
}

function filterMenus(menus, type = false) {
  let keyIndex = 1;

  function setMenusKey(menus, path = "", type = false) {
    let newMenus = [];
    menus.forEach(item => {
      let icon: any = "";
      if (item.meta && item.meta.icon && item.meta.icon in icons) {
        icon = () => h(icons[item.meta.icon])
      }
      let menuItem = {
        title: item.meta ? item.meta.title : "",
        label: item.meta ? item.meta.title : "",
        path: (path + "/" + item.path).replaceAll("///", "/").replaceAll("//", "/"),
        key: keyIndex + "",
        icon: icon,
        children: null,
      }
      keyIndex++;
      if (!item.hidden) {
        let childrens = null;
        if (item.children && item.children.length) {
          childrens = setMenusKey(item.children, menuItem.path, type);
        }
        if (item.path) {
          menuItem.children = childrens;
          newMenus.push(menuItem);
        } else {
          if (childrens && type) {
            newMenus.push(...childrens)
          }
        }
      }
    })
    return newMenus;
  }

  return setMenusKey(menus, "", type);
}

export {usePermissionStore}
